Stiebel Eltron Tempra 20 plus Review

Stiebel Eltron Tempra 20 plus Electric Tankless Water Heater, is one of the small-sized electric water heaters from Stiebel Eltron. This 90-year-old German company has done much experiment with water heaters and has a range of different kinds. If you can are fond of German technology you know about their acridity to make a superior product. Stiebel Eltron Tempra 20 is ideal for a home where one bath and another water fixtures are used at a time. 

Stiebel Eltron Tempra 20 Plus

You can use it in the Northern and southern weather all you need is to look inside the size guide and find out how much rise it gives at different outlet temperature.

=====>>> In a hurry? You can check Amazon to see the Stiebel Eltron Tempra 20 plus.

What Is Interesting About the Tempra 20 plus?

Hot water always

You know the in case of tankless water heaters, the relation between heating speed and the flow of water (GPM) determine how efficient it is. Stiebel Eltron 20 plus has an excellent combination to offer. At 2 GPM flow, it gives 8 0 degrees rise (minimum flow) while at GPM of 8 it gives 18-degree rise at volt at 240. At 208 this combination experiences a little change.

No more fluctuation

Stiebel Eltron Tempra has the most modern technology of microprocessor; this chip does not let any fluctuation in water temperature feel despite the change of flow rate. An occasional drop of temperature is unlikely until you open more faucet than it is capacity.

No venting required

Gas fired tankless heaters are great as they heat up water faster. Also, they are good if you are dynamic configuration and wiring are unfavorable to support an electric heater. Stiebel Eltron Tempra 20 plus can undermine these attributes easily by saving the pain of proper venting. This all electric water heater let you install it anywhere without being concerned about the air pollution and venting space requirement.

Good looks

Stiebel Eltron Tempra has a slim outlook free from the burden of a tank it weighs only 16 pounds, and with  21.2 x 19.4 x 8.5 inches dimension it is pretty small. SO it is perfectly suitable to fit into the minute corner of your home or office.

Digital temperature control

It has a convenient Digital temperature control scale offering a scale of 30°C (86°F) and 60°C (140°F). Once you choose a temperature for the whole bath, you can stick to it or change it. One thing is sure to water temperature will not change because of flow change only deciding factor is your choice to change it. One thing is to be reminded that more heat means more electricity so you can now make an informed choice.

What People Like

  • Straightforward Installation
  • Compatible with both 208/240 volt standard electrical wiring.
  • Warranty is applicable for both domestic and commercial usage.

What People Do Not Like

The expensive installation- 

The the fact that you buy a water heater for a stack of the dollar only to find out you have to pay that much or more to install it with professional is frustrating. Especially when if you do it otherwise it voids your contract or warranty.


If you are ready to void the three-year warranty issue, you can spend nothing on installation. Generally, such water heaters trouble mostly after the warranty period; so you can risk it. Also, you can compare the price of professional installation with the future unseen repairmen cost, which is likely not to occur in such a short span of 3 years.

If you have correct gauge wiring and breaker size, then this electrical work is simple with the help of videos and installation booklet.

For the plumbing, if your tankless is replacing an existing water heater in the same area than plumbing connections are uncomplicated. If it is being installed at a new place you cannot blame it on the unit, you need plumbing for it as much as you would have needed it for any other such appliance from any other brand. Good news is the installation booklet is pretty explicit on helping out an amateur in all aspect of electrical and plumbing.

It disappoints with temperature- Some complains it did not function accordingly with the high demand for water.


When using an electric water heater always install it with the amp and breaker, it has been asked for and gives a load 3% less to it.

If you have 240 volts, your product will use 80% of it and produce water accordingly. So if you want a more powered bath, give more power and never use up to the highest limit for best results.

Commonly Asked Queries for Tempra 20 plus Electric Tankless Whole House Water Heater

Q- What are the electrical requirements for installing this unit?

Ans- It gets enough power if you go with 2-40 amp breakers (240 volts), or for 208 volts go with 2 unit of 35 amp breakers, number of runs and copper wire is 2 x 8/2 AWG

Q- What is the minimum activation rate for it?

Ans- It starts the burner when- 0.50 GPM / 1.9 l/min minimum flow is achieved.

Q- My water has a pretty hard condition I have heard it does not work with low PSI.

Ans- I does not know if, you have your water tested, but 150 PSI is its minimum PSI requirement and can work up to 300 PSI level. So yes it is not entirely useful if your water is more laborious than 150

Q- What are the warranty clause for it? Will it be voided if I install by myself?

Ans- Stiebel Eltron Tempra 20 plus Electric Tankless Whole House Water Heater offers a three-year limited warranty when licensed personnel must install the product.

Verdict: Is This Water Heater For You?

If you live at a place with 45 degrees to 65-degree temperature, looking for a tankless compact, durable water heater, need an indoor unit, do not like the venting inside the home concept than Stiebel Eltron Tempra 20 plus Electric Tankless Whole House Water Heater

Is what you need. It is durable, consistent and installation is easy in case you are ready to give up warranty condition. The cherry on top is it has 4.5 out of 5 stars in Amazon, and four negative reviews are more about troubleshooting concern rather than reporting a bad apple.

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